//弹出隐藏层
function showDiv(show_div, bg_div) {
	document.getElementById(show_div).style.display = 'block';
	document.getElementById(bg_div).style.display = 'block';
	var bgdiv = document.getElementById(bg_div);
	bgdiv.style.width = document.body.clientWidth;
	$("#" + bg_div).height($(document).height());
};
// 关闭弹出层
function closeDiv(show_div, bg_div) {
	document.getElementById(show_div).style.display = 'none';
	document.getElementById(bg_div).style.display = 'none';
};